I thought, for being PG, the movie was great. I expected much more 'kiddy' moments then I got, though they were still in there. I haven't seen the original, just a clip here or there, but my friend had watched them when he was younger...on tape. He liked that they kept some of the racers, and though it was different over all he liked it. The colors where odd but the racing made up for that, and the fight scene was pretty good lol. The camera was a bit odd but you know I haven't seen that before and it was interesting.
I also heard some of the reviews, at least this one, he didn't like it because of what it's message about big corporations was.
As for it being a game, yea if it could capture what the movie had it would be one of the few Racing games I like. Realism in racing is boring to me, and the more damage they can take the better.